Question

If the number 61z5 is divisible by 3 then what are values z can take ?


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Answer 1

Answer:

to make the no. divisible by 3 sum of digits must be divisible by 3.

6+1+5 = 12

So z can take values 0 , 3 , 6 , 9

12+0 = 12

12+3= 15

12+6 = 18

12+ 9 = 21

all the no. are divisible by 3